
38 Zhenlong Li, Qunying Huang, and Zhipeng Gui
3.3.2 Virtualization solutions
Currently, a wide range of virtualization solutions have been developed
including both commercial and open-source solutions. For example, Xen,
VMware, and VirtualBox support a wide spectrum of operating systems
as either hosts or guests. As a result, the software compatibility issue is
dismissed by obtaining the homogenization at the software level (McEvoy
and Schulze 2008). Table3.1 shows the widely used virtualization solutions,
related cloud services, and their virtualization approaches.
• Xen—This is an open-source solution utilizing paravirtualization
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